CN106449053B - High frequency transformer - Google Patents
High frequency transformer Download PDFInfo
- Publication number
- CN106449053B CN106449053B CN201610995019.3A CN201610995019A CN106449053B CN 106449053 B CN106449053 B CN 106449053B CN 201610995019 A CN201610995019 A CN 201610995019A CN 106449053 B CN106449053 B CN 106449053B
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- China
- Prior art keywords
- core
- receiving portion
- magnetic core
- leakage field
- main magnetic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F19/00—Fixed transformers or mutual inductances of the signal type
- H01F19/04—Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F3/14—Constrictions; Gaps, e.g. air-gaps
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The invention discloses a kind of high frequency transformers, including skeleton, armature winding, secondary windings and main magnetic core, the skeleton includes main magnetic core receiving portion, the main magnetic core includes winding magnetic pole, the winding magnetic pole is located in the main magnetic core receiving portion, the outer wall of the main magnetic core receiving portion is equipped with primary coiling portion, leakage field core receiving portion and secondary coiling portion successively, and the armature winding and secondary windings are wound on respectively in the primary coiling portion and secondary coiling portion；The high frequency transformer further includes leakage field core, and the leakage field core is located in the leakage field core receiving portion.By setting leakage field core, the magnetic line of force in armature winding, secondary windings and main magnetic core in high frequency transformer is acted, collateral branch's magnetic flux is formed, so as to increase leakage inductance.When producing resonant mode power supply, without additionally setting independent inductance, production process and wiring complexity are reduced.
Description
Technical field
The present invention relates to field transformer, more particularly to applied to the transformer in high-frequency circuit.
Background technology
In high frequency switch power application, particularly in resonant transformation topology, need to coordinate using resonant inductance and transformer.
There are two types of common design methods：
1. using traditional transformer and independent resonant inductance, power supply architecture can be made complicated in this way, volume increase, and
Make pcb board cabling complexity, electromagnetic interference big.Lead to that product efficiency is low, volume is big, of high cost.
2. simply resonant inductance is integrated in transformer, resonant inductance use is done by the leakage inductance for increasing transformer.
Usually reach the requirement of resonant inductance by changing the distance between primary and secondary winding to change the leakage inductance of transformer.Need compared with
Big leakage inductance, it is necessary to increase the distance between primary and secondary winding, volume of transformer increasing, magnetic coupling energy force difference, transformation can be caused
Transmission efficiency is low for device, and certain condition limitation under, leakage inductance can increased range it is extremely limited.
Invention content
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of height for combining resonant inductance (leakage inductance)
Frequency power transformer, can solve existing resonant mode power supply needs to add separate inductor, and design is complicated, bulky problem.Also it can solve
It is certainly existing limited by increasing the increase of the distance between primary and secondary winding leakage inductance effect, it is difficult to meet the problem of application is required.
The purpose of the present invention is realized using following technical scheme：
A kind of high frequency transformer, including skeleton, armature winding, secondary windings and main magnetic core；
The skeleton includes main magnetic core receiving portion, and the main magnetic core includes winding magnetic pole, and the winding magnetic pole is located at described
In main magnetic core receiving portion, the outer wall of the main magnetic core receiving portion be equipped with successively primary coiling portion, leakage field core receiving portion and it is secondary around
Portion processed, the armature winding and secondary windings are wound on respectively in the primary coiling portion and secondary coiling portion；
The high frequency transformer further includes leakage field core, and the leakage field core is located in the leakage field core receiving portion.
Preferably, the leakage field core be UU, UI or CC type combined magnet core, the inside of UU, UI or CC type combined magnet core
It offsets with the outer wall of the main magnetic core receiving portion.
Preferably, the interface of UU, UI or CC type combined magnet core combination is equipped with air gap.
Preferably, UU, UI or CC type combined magnet core includes two side portions, and at least one in described two side portions
It is a that side protrusion is equipped in inside；The leakage field core receiving portion is equipped with through-hole, and the through-hole runs through the main magnetic core receiving portion
Outer wall, the side protrusion is located in the through-hole.
Preferably, UU, UI or CC type combined magnet core includes two side portions, and at least one in described two side portions
It is a that side protrusion is equipped in inside；The leakage field core receiving portion is equipped with groove, and the side protrusion is located in the groove.
Preferably, the main magnetic core receiving portion is round, rectangle or rectangular receiving portion.
Preferably, the main magnetic core is UU, UI, EE, EI, EC or PQ type magnetic core.
Preferably, the leakage field core is FERRITE CORE, permalloy magnetic core, non-crystaline amorphous metal magnetic core, ultramicro-crystal alloy magnetic
Core, magnetic powder core, sendust core or iron silicon magnetic core.
Preferably, the outer wall of the main magnetic core receiving portion is equipped with partition board, the primary coiling portion, leakage field core receiving portion and
Secondary coiling portion is separated by the partition board.
Preferably, the skeleton is horizontal-type skeleton or vertical-type skeleton, and the skeleton further includes pin, the armature winding and
Secondary windings includes exit, and the exit is connect with the pin.
Compared with prior art, the beneficial effects of the present invention are：By setting leakage field core, to primary in high frequency transformer around
The magnetic line of force in group, secondary windings and main magnetic core acts, and collateral branch's magnetic flux is formed, so as to increase leakage inductance.In production resonant mode
During power supply, without additionally setting independent inductance, production process and wiring complexity are reduced.
Description of the drawings
Fig. 1 is the decomposition texture schematic diagram for the high frequency transformer that the embodiment of the present invention one provides.
Fig. 2 is the decomposition texture schematic diagram of high frequency transformer provided by Embodiment 2 of the present invention.
Fig. 3 is the leakage field cored structure schematic diagram for the high frequency transformer that the embodiment of the present invention three provides.
Specific embodiment
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow the above and other objects, features and advantages of the present invention can
It is clearer and more comprehensible, special below to lift preferred embodiment, and coordinate attached drawing, detailed description are as follows.
Embodiment one：
High frequency transformer as shown in Figure 1, including skeleton 10, armature winding 21, secondary windings 22 and main magnetic core 30.Its
In, skeleton 10 includes main magnetic core receiving portion 11, and main magnetic core 30 includes winding magnetic pole 31, and winding magnetic pole 31 is located at main magnetic core receiving portion
In 11, the outer wall of main magnetic core receiving portion 11 is equipped with primary coiling portion 12, leakage field core receiving portion 13 and secondary coiling portion 14 successively, just
Grade winding 21 and secondary windings 22 are wound on respectively in primary coiling portion 12 and secondary coiling portion 14；High frequency transformer further includes leakage
Magnetic core 40, leakage field core 40 are located in leakage field core receiving portion 13.In the present embodiment, main magnetic core 30 (includes likeness in form E for 2 " E " types
Type) mode docks composition to magnetic core mouth to mouth.Main magnetic core 30 can be UU, UI, EI, EC or PQ type combined magnet core in other embodiment
Deng；The shape of corresponding skeleton 10 can also do corresponding transformation, and typically, main magnetic core receiving portion 11 is round, rectangle or side
Shape receiving portion.In the present embodiment, for 2 U-typeds (U-shaped comprising being similar to), mode docks composition to magnetic core to leakage field core 40 mouth to mouth,
The inside of UU, UI or CC type combined magnet core and the outer wall of main magnetic core receiving portion 10 offset, in another embodiment, can be UI,
CC type combined magnet cores etc..Armature winding 21 and secondary windings 22 can be from materials such as enameled wire, three layer insulation wire, copper foil or PCB
Middle selection.
In the present embodiment, by the way that leakage field core 40 is set to form collateral branch's magnetic circuit, to armature winding in high frequency transformer 21, secondary
The magnetic line of force in winding 22 and main magnetic core 30 acts, and collateral branch's magnetic flux is formed, so as to increase leakage inductance.Leakage field core 40 can be iron
Ferrite core, permalloy magnetic core, non-crystaline amorphous metal magnetic core, ultramicro-crystal alloy magnetic core, magnetic powder core, sendust core, iron silicon magnetic
Core etc..
Further, the outside of leakage field core 40 is equipped with first and fixes band (not shown) for fixed Combination magnetic core and insulation；Just
Grade winding 21 and 22 outside of secondary windings are equipped with second and fix band (not shown), insulate for fixed；The outside of main magnetic core 30 is set
There is third to fix band, (not shown) is used for fixed Combination magnetic core and insulation.
Further, the outer wall of the main magnetic core receiving portion 11 of skeleton 10 is equipped with partition board 15, and primary coiling portion 12, leakage field core hold
It receives portion 13 and secondary coiling portion 14 is separated by partition board 15.
Further, skeleton 10 is horizontal or vertical-type skeleton, and skeleton 10 further includes pin 16, armature winding 21 and secondary windings
22 have conducting wire as exit (not shown), and exit is connect with pin 16.
Embodiment two：
Fig. 2 is the decomposition texture schematic diagram of a high frequency transformer provided in this embodiment, with reference to Fig. 2, the present embodiment and reality
Apply example one difference lies in：Leakage field core 40 is equipped with air gap 41, typically, the interface that air gap 41 can be combined in combined magnet core
Place.In the present embodiment, the one arm of U-shaped magnetic core is slightly short, UU type core combinations get up interface formed air gap.
In another embodiment, since leakage field core receiving portion 13 corresponds to the interface side of the combined magnet core of UU or UI types
The length of side is slightly larger than the inside length of side of UU, UI or CC type combined magnet core interface side, prevents UU, UI or CC type combined magnet core from complete
It touches, so as to form air gap 41 in UU, UI or CC type combined magnet core interface.It can be adjusted by adjusting the width of air gap 41
Save the size of leakage inductance.Further, dottle pin 42 or glue-line are equipped in air gap 41, for increasing the fixed effect of combined magnet core
Fruit.
The size of leakage inductance can also pass through the thickness, that is, main magnetic core 30 and leakage field at the leakage field core receiving portion 13 on skeleton 10
The spacing of core 40 is adjusted.Further increase the adjustable range of leakage inductance amount.Embodiment three
As shown in figure 3, UI types combined magnet core 100 includes two side portions, i.e., the side portion of U-shaped magnetic core 110 and I type magnetic cores
120 itself, side protrusion 130, side are equipped on the inside of " mouth " word that at least one of two side portions are formed in combined magnet core 100
Side protrusion 130 is cylindric or prism-shaped；Skeleton 200 includes main magnetic core receiving portion 210 and leakage field core receiving portion 220, leakage field core
Receiving portion 220 is equipped at least one (preferred, equal with the raised 130 ground quantity in side) through-hole 230, and through-hole 230 is through master
The outer wall of magnetic core receiving portion 210；After combining, side protrusion 130 is located in through-hole 230.In another embodiment, through-hole
230 do not extend through the outer wall of main magnetic core receiving portion 210, but form groove.On the one hand leakage field core (not shown) can be made more to lean on
Nearly main magnetic core (not shown) convenient for collateral branch's magnetic circuit export magnetic line of force that leakage field core is formed, forms leakage inductance；On the other hand leakage field is avoided
Slip of the core in leakage field core receiving portion 220.
For those skilled in the art, technical solution that can be as described above and design are made other each
Kind is corresponding to be changed and deforms, and all these change and deform the protection model that should all belong to the claims in the present invention
Within enclosing.
Claims (8)
1. a kind of high frequency transformer, including skeleton, armature winding, secondary windings and main magnetic core, it is characterised in that：
The skeleton includes main magnetic core receiving portion, and the main magnetic core includes winding magnetic pole, and the winding magnetic pole is located at the main magnetic
In core receiving portion, the outer wall of the main magnetic core receiving portion is equipped with primary coiling portion, leakage field core receiving portion and secondary coiling portion successively,
The armature winding and secondary windings are wound on respectively in the primary coiling portion and secondary coiling portion；
The high frequency transformer further includes leakage field core, and the leakage field core is located in the leakage field core receiving portion；
The leakage field core is UU, UI or CC type combined magnet core, the inside of UU, UI or CC type combined magnet core and the main magnetic core
The outer wall of receiving portion offsets；
UU, UI or CC type combined magnet core is set including at least one of two side portions, described two side portions in inside
There is side protrusion；The leakage field core receiving portion is equipped with through-hole, and the through-hole runs through the outer wall of the main magnetic core receiving portion, described
Side protrusion is located in the through-hole.
2. high frequency transformer as described in claim 1, it is characterised in that：UU, UI or CC type combined magnet core combination connects
Air gap is equipped at mouthful.
3. high frequency transformer as described in claim 1, it is characterised in that：UU, UI or CC type combined magnet core includes two
At least one of side portion, described two side portions is equipped with side protrusion in inside；The leakage field core receiving portion is equipped with recessed
Slot, the side protrusion are located in the groove.
4. high frequency transformer as described in claim 1, it is characterised in that：The main magnetic core receiving portion is round, rectangle or side
Shape receiving portion.
5. high frequency transformer as described in claim 1, it is characterised in that：The main magnetic core is UU, UI, EE, EI, EC or PQ type
Magnetic core.
6. the high frequency transformer as described in any one of claim 1-5, it is characterised in that：The leakage field core is ferrite magnetic
Core, permalloy magnetic core, non-crystaline amorphous metal magnetic core, ultramicro-crystal alloy magnetic core, magnetic powder core, sendust core or iron silicon magnetic core.
7. the high frequency transformer as described in any one of claim 1-5, it is characterised in that：The outer wall of the main magnetic core receiving portion
Partition board is equipped with, the primary coiling portion, leakage field core receiving portion and secondary coiling portion are separated by the partition board.
8. the high frequency transformer as described in any one of claim 1-5, it is characterised in that：The skeleton is horizontal-type skeleton or stands
Formula skeleton, the skeleton further include pin, and the armature winding and secondary windings include exit, and the exit draws with described
Foot connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610995019.3A CN106449053B (en) | 2016-11-11 | 2016-11-11 | High frequency transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610995019.3A CN106449053B (en) | 2016-11-11 | 2016-11-11 | High frequency transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106449053A CN106449053A (en) | 2017-02-22 |
| CN106449053B true CN106449053B (en) | 2018-06-26 |
Family
ID=58208387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610995019.3A Active CN106449053B (en) | 2016-11-11 | 2016-11-11 | High frequency transformer |
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| Country | Link |
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| CN (1) | CN106449053B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887143A (en) * | 2017-12-26 | 2018-04-06 | 天津光电润达电子有限公司 | A kind of PQ types high-frequency and high-voltage integrated transformer and processing method |
| CN108417366A (en) * | 2018-01-12 | 2018-08-17 | 海宁联丰东进电子有限公司 | A kind of LLC transformers increasing leakage inductance |
| CN109215985B (en) * | 2018-08-27 | 2023-11-21 | 东莞市大忠电子有限公司 | High-stability vehicle-mounted transformer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200969274Y (en) * | 2006-07-07 | 2007-10-31 | 台达电子工业股份有限公司 | Transformer having winding monobody |
| KR20120067061A (en) * | 2010-12-15 | 2012-06-25 | 엘지이노텍 주식회사 | Transformer and method for manufacturing thereof |
| CN202650818U (en) * | 2012-03-22 | 2013-01-02 | 一诺科技股份有限公司 | Transformer structure capable of increasing leakage inductance |
| CN203288405U (en) * | 2013-05-16 | 2013-11-13 | 一诺科技股份有限公司 | Leakage inductance adjustment transformer |
| CN206312725U (en) * | 2016-11-11 | 2017-07-07 | 深圳市莱福德光电有限公司 | High frequency transformer |
-
2016
- 2016-11-11 CN CN201610995019.3A patent/CN106449053B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200969274Y (en) * | 2006-07-07 | 2007-10-31 | 台达电子工业股份有限公司 | Transformer having winding monobody |
| KR20120067061A (en) * | 2010-12-15 | 2012-06-25 | 엘지이노텍 주식회사 | Transformer and method for manufacturing thereof |
| CN202650818U (en) * | 2012-03-22 | 2013-01-02 | 一诺科技股份有限公司 | Transformer structure capable of increasing leakage inductance |
| CN203288405U (en) * | 2013-05-16 | 2013-11-13 | 一诺科技股份有限公司 | Leakage inductance adjustment transformer |
| CN206312725U (en) * | 2016-11-11 | 2017-07-07 | 深圳市莱福德光电有限公司 | High frequency transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106449053A (en) | 2017-02-22 |
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Address after: 518000 Guangdong province Shenzhen city Baoan District street Xixiang Development Zone guwu Indus Taihua Industrial Park building 14A building 4-5 Applicant after: Polytron Technologies Inc, Shenzhen Address before: 518000 Guangdong province Shenzhen city Baoan District street Xixiang Development Zone guwu Indus Taihua Industrial Park building 14A building 4-5 Applicant before: Shenzhen Ledfriend Optoelectronics Co., Ltd. |
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